Battery testing apparatus



FIG. 1 is a perspective view of a battery testing apparatus showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is an enlarged top plan view thereof; and,

FIG. 7 is an enlarged bottom plan view thereof.

The broken lines shown in the figures depict portions of the battery testing apparatus that form no part of the claimed design. 

CLAIM The ornamental design for a battery testing apparatus, as shown and described. 